Added code of conduct (closes #5)

[andrewvaughan]

No description provided.

[github-actions]

🦙 MegaLinter status: ✅ SUCCESS

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ COPYPASTE	jscpd	yes		no	1.6s
✅ EDITORCONFIG	editorconfig-checker	1		0	0.02s
✅ MARKDOWN	markdownlint	1	0	0	0.82s
✅ MARKDOWN	markdown-link-check	1		0	1.24s
✅ MARKDOWN	markdown-table-formatter	1	0	0	0.29s
✅ REPOSITORY	checkov	yes		no	10.65s
✅ REPOSITORY	devskim	yes		no	1.42s
✅ REPOSITORY	dustilock	yes		no	0.02s
✅ REPOSITORY	gitleaks	yes		no	0.16s
✅ REPOSITORY	git_diff	yes		no	0.01s
✅ REPOSITORY	grype	yes		no	41.41s
✅ REPOSITORY	kics	yes		no	10.56s
✅ REPOSITORY	secretlint	yes		no	0.89s
✅ REPOSITORY	syft	yes		no	0.19s
✅ REPOSITORY	trivy	yes		no	3.71s
✅ REPOSITORY	trivy-sbom	yes		no	0.69s
✅ REPOSITORY	trufflehog	yes		no	2.97s
✅ SPELL	cspell	2		0	2.43s

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